Possible Duplicate:
Should I use a file extension or not?
My current hosting provider does not let me put PHP code inside of a .html page. So part of my content is in a database and displayed with PHP, but most of it is in pre-rendered .html files. I'd like to put more of it in .php files however I am concerned that search engines will penalize my .php pages because they are PHP. Is there any evidence so that effect? Thanks.